I think pennies should be eliminated and everything priced in multiples of 5. But then there's this pesky problem of sales taxes...Rounding up or down to the nearest $0.05 would be fine if establishments rounded down as well as up.

Come to think of it, it is possible to include sales taxes in the cost of the food - but I've only seen one place that ever did it.

I remember being very surprised many years ago while visiting my family in the Dominican Republic. We went shopping and the cost of the item was lets say $19.95 and they rounded it up to $20. With the value of their peso, coins were pretty useless, but things were still marked to reflect change.